diff --git a/opencensus/common/version/__init__.py b/opencensus/common/version/__init__.py
index f6dc0f413..ebf29a38b 100644
--- a/opencensus/common/version/__init__.py
+++ b/opencensus/common/version/__init__.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = '0.11.3'
+__version__ = '0.12.dev0'